And, RK,s do not come with tachs. You could either spend big bucks for a speedo\tach combo or get a handlebar cover mounted one. I think once you get used to hearing the rev's you won't need one.
To make your dash look stock, you could bid on something like these:
Disclaimer: I am not verifying the fitment of the above items, check first. Those are what the stock dashboards look like.
rkc
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"enjoy every sandwich" - W Zevon
2001 FLHR (carb) w 95" 26g cam and a head job.
Corbin Classic Solo
V&H Big Shot Duals w "Quiet" Baffles
16" Wild 1 chubby's
TWR stabilizer